小学四年级两位数乘一位数口算练习
人教版小学三年级数学上册第六章-多位数乘一位数-教案-复习-练习
第6单元多位数乘一位数考前读一读1、口算乘法（整十数、整百数、整千数乘一位数)2、估算(先估再算)、3、两位数乘一位数不进位乘、两位数乘一位数进位乘、三位数乘一位数连续进位乘、中间或末尾含零三位数乘一位数进位乘。
基础知识过关1、估算。
（先求出多位数的近似数，再进行计算.如497×7≈3500)2、① 0和任何数相乘都得0；② 1和任何不是0的数相乘还得原来的数。
3、因数末尾有几个0,就在积的末尾添上几个0。
4、三位数乘一位数：积有可能是三位数，也有可能是四位数。
5、（关于“大约）应用题：①条件中出现“大约”,而问题中没有“大约"，求准确数.→（＝)②条件中没有，而问题中出现“大约”。
求近似数，用估算.→（≈）③条件和问题中都有“大约”，求近似数，用估算。
→(≈）知识点一、提出乘法问题（一）、几个几用乘法1、9元/个 8元/个 2元/个 5元/把(1）、买4个西瓜要用多少元?（2）、买5个菠萝和一把香蕉要用多少元?（二）、一个数的几倍我们用乘法式子1、小轿车说:“我车上有3位乘客。
"吉普车说:“我车上的人是小汽车的2倍.”大客车说：“我车上的人数是小轿车的7倍。
”(1）、吉普车上有多少位乘客?(2)、大客车上有多少位乘客？（三)、知道份数与每份数用乘法1、小丽妈妈今天买了很多苹果,要小丽把苹果分给在家里的每个人，有爷爷、奶奶、爸爸、妈妈、外公、外婆。
每人分3个，一共要多少个苹果?知识点二、整百整时乘一位数的乘法（一）整十整百的计算技巧40×3= 40×3= 40×3=400×3 = 40×30= 400×30=4000×3 = 40×300= 4000×300=【计算的时候先不看零进行简单的乘法运算，算完后两个因数一共有多少个零均写到积后面,切记为因数零的个数和】(二）最近我们学习了时间，你知道一分钟能干多少事吗?2分钟呢？请你用秒表测一下下面的口算你只需要几分钟40×3= 2×400= 20×6= 2×7=50×3 = 4×600= 7×30= 20×7=80×9 = 700×5= 3000×2= 200×7=100×7 = 30×2 = 20×9= 2000×7=我是神算手,我只用了（ )分钟.知识点三、两位数与三位数乘一位数的估算你还记得我们估算的要领吗？（）1、小明一家非常喜欢旅游,他们来到一座公园。
四年级上册数学集体备课记录(第一至七单元,共五次)
①让估算和笔算相互促进。在列出算式420÷30后，教材呈现了三种估算的情况，其中第三种可以看作是对前两种估算结果的提升和概括。如果学生估计有困难，可以设计台阶：分给10个班够吗？20个班呢？在确定商的书写位置时要利用估算的结果加以解释。
②把自主探索和小组交流结合起来。要引导学生围绕下面的问题展开讨论：这样的除法分几步进行？先把被除数的哪部分除以30，商写在哪里？然后把什么除以30，商写在哪里？通过这些问题让学生明确：这样的计算分两步进行； “1”要写在商的十位上；要把余下的数和个位上的数合起来继续除。
2、让学生在计算中体会数量间相依互变的关系，通过学到的知识解决一些简单的实际问题；
3、利用讨论、交流等形式展开小组学习，培养学生的合作探究能力，培养质疑和验证科学知识的能力。
练习二
⒈通过练习，使学生进一步掌握三位数除以两位数的试商方法，提高计算的正确率和速度。
⒉通过提高题练习，培养学生善于观察、发现规律的意识和能力。
4. 练习三…………………2课时
5.复习…………………2课时
单元
教学
目标
⒈使学生在具体情境中，联系已有的知识经验，自己探索、掌握整十数、几百几十除以整十数（商一位数）、两位数除以一位数（首位不能整除且商是两位数）的口算方法，并能正确地进行口算。
⒉使学生经历试商过程，掌握三位数除以两位数的笔算方法，能正确进行笔算；进一步加强估算意识，提高估算能力。
4、使学生能积极地参与学习活动，并获得成功的经验；能运用角的知识描述相应的生活现象，感受用数据说明问题的实事求是的态度与方法。
每课
教学
目标
角的认识和度量
⒈使学生进一步认识线段，认识射线和直线，知道三者之间的联系和区别。
小学四年级《三位数乘两位数》练习题及答案(必刷)
小学四年级《三位数乘两位数》练习题一.选择题(共10题，共20分)1.在乘法中，一个乘数乘10，另一个乘数乘20，得到的积就等于原来的积（）。
A.乘10B.乘20C.乘2002.要使□21×41的积是五位数，□里最小填（）。
A.4B.3C.23.下面有关单价、数量与总价的关系错误的是（）。
A.单价=总价÷数量B.总价=单价×数量C.数量=单价÷总价4.成人平均体重65千克，150人一次性乘坐载重量1吨的电梯，会超载吗？（）A.超载B.没超载C.无法判断5.450×80的积的末尾只有（）个0。
A.2B.3C.46.甲数是328，乙数是甲数的15倍，要求乙数是多少，可列式为（）。
A.328+15B.328×15C.328÷157.在计算756×48时，4×5表示（）。
A.4×5B.40×5C.40×508.357×29，所得的积是一个（）。
A.五位数B.六位数C.四位数9.下面算式中，（）的得数小于5000。
A.240×18B.159×50C.302×1910.一辆出租车平均每星期行驶4000千米，这辆出租车一年大约行驶（）千米。
A.20000B.200000C.2000000二.判断题(共10题，共20分)1.两个因数的积是4560，如果一个因数扩大10倍，另一个因数不变，积是45600。
（）2.18×500，积的末尾只有两个0。
（）3.在乘法算式中，一个因数不变，另一个因数乘几，得到的积和原来相等。
（）4.25的20倍与250的2倍相等。
（）5.甲数是425，乙数是63，求两数之积，用乘法，列式为425×63。
（）6.两个因数都扩大到原数的6倍，积就扩大到原数的12倍。
（）7.口算810×10时，可以直接在810的后面添上1个0，得8100。
一位数,两位数乘,整十数,整百数的口算练习题25
一位数，两位数乘，整十数，整百数的口算
轻松搞定基础。
1. 直接写得数，
36×10= 67×20= 34×30=
10× 55 = 23×100= 43×100=
25× 50 = 30×35= 15×40=
2. 填一填。
（1）10个25是（），43的30倍是（）。
（2）25× 50 的积是（）位数，积的末尾有（）个0，积的最高位是（）位。
（3）25× 50的积是（）位数，积的末尾有（）0.
3. 不用计算，你能判断出对错吗？
58×10＝58( ) 88×30＝314( ) 350×70＝
2450( )
4，解决问题。
（1）李老师到体育用品商店买了10个单价为38元的篮球。
他应付多少元？
一共有1000千克玉米，40千克装一袋，22个袋子够吗？
5.学校外出秋游，三年级学生排了4队，每队23人；四年级学生排了3队，每队50人。
三、四年级参加秋游活动的学生各有多少人？
6.王老师打算到商店买足球，商店里有三种足球，单价分别是100元，200元，80元。
(1)王老师打算买15个足球，最少要花多少元？最多要花多少元？
(2)如果王老师带了1600元买同种足球，那么各种足球各可买多少个？
7.一篇稿件有400个字，小丁叔叔平均每分钟打53个字，8分钟能打完吗？。
四年级上册口算题(三位数乘两位数) 3000题
530 × 15 =103 × 60 =800 × 10 =100 × 35 =280 × 30 =990 × 10 =898 × 10 =125 × 70 =510 × 10 =154 × 50 =252 × 28 =400 × 20 =180 × 10 =111 × 10 =123 × 50 =162 × 40 =120 × 44 =40 × 80 =360 × 20 =552 × 10 =472 × 20 =140 × 31 =272 × 10 =660 × 14 =912 × 10 =150 × 10 =300 × 10 =658 × 10 =239 × 37 =505 × 18 =423 × 16 =262 × 10 =235 × 40 =490 × 10 =550 × 16 =200 × 22 =136 × 45 =80 × 20 =432 × 10 =243 × 16 =310 × 20 =379 × 20 =127 × 25 =190 × 40 =355 × 19 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:540 × 10 =160 × 30 =408 × 10 = 100 × 80 =953 × 10 =210 × 44 = 500 × 10 =102 × 40 =165 × 32 = 688 × 11 =911 × 10 =576 × 10 = 304 × 25 =160 × 50 =114 × 73 = 515 × 10 =470 × 10 =578 × 10 = 541 × 10 =170 × 28 =954 × 10 = 728 × 10 =335 × 10 =650 × 10 = 184 × 26 =630 × 15 =315 × 30 = 200 × 50 =331 × 10 =199 × 26 = 420 × 15 =100 × 20 =129 × 50 = 218 × 10 =335 × 12 =410 × 20 = 280 × 12 =600 × 10 =120 × 53 = 215 × 23 =200 × 20 =140 × 13 = 270 × 30 =580 × 10 =500 × 20 = 100 × 70 =930 × 10 =175 × 46 = 160 × 60 =330 × 24 =150 × 56 = 900 × 10 =565 × 10 =100 × 90 = 265 × 10 =720 × 10 =246 × 36 =390 × 13 =223 × 40 =199 × 26 =103 × 90 =156 × 60 =235 × 40 =290 × 14 =280 × 30 =160 × 23 =80 × 20 =424 × 15 =290 × 17 =140 × 24 =820 × 10 =250 × 20 =310 × 28 =335 × 12 =162 × 40 =336 × 10 =312 × 31 =148 × 20 =175 × 46 =10 × 50 =129 × 54 =595 × 12 =184 × 26 =359 × 25 =198 × 13 =990 × 10 =331 × 10 =953 × 10 =410 × 17 =400 × 10 =285 × 20 =100 × 84 =140 × 60 =400 × 20 =150 × 40 =155 × 60 =262 × 10 =160 × 60 =134 × 40 =140 × 31 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:631 × 10 =195 × 36 =236 × 40 = 258 × 33 =200 × 30 =392 × 25 = 913 × 10 =240 × 30 =152 × 42 = 600 × 10 =464 × 20 =106 × 10 = 120 × 44 =370 × 18 =550 × 10 = 688 × 11 =470 × 12 =440 × 10 = 435 × 20 =363 × 20 =162 × 60 = 630 × 10 =230 × 37 =200 × 24 = 142 × 30 =100 × 80 =431 × 10 = 341 × 25 =675 × 10 =265 × 30 = 390 × 10 =380 × 10 =180 × 11 = 120 × 75 =132 × 20 =190 × 40 = 246 × 30 =634 × 10 =385 × 14 = 114 × 73 =430 × 20 =300 × 10 = 295 × 10 =165 × 20 =270 × 23 = 129 × 50 =700 × 10 =224 × 28 = 149 × 33 =250 × 40 =180 × 30 = 218 × 10 =475 × 17 =225 × 10 = 158 × 60 =590 × 10 =137 × 60 =210 × 44 =410 × 20 =688 × 11 =400 × 14 =470 × 12 =224 × 28 =199 × 26 =550 × 10 =556 × 15 =120 × 56 =934 × 10 =335 × 12 =334 × 20 =400 × 10 =180 × 20 =190 × 40 =149 × 10 =330 × 10 =141 × 68 =869 × 10 =240 × 20 =552 × 10 =304 × 25 =516 × 15 =630 × 15 =953 × 10 =149 × 55 =200 × 20 =100 × 90 =192 × 50 =300 × 10 =359 × 25 =80 × 20 =898 × 10 =560 × 10 =290 × 14 =175 × 46 =431 × 10 =390 × 10 =119 × 60 =158 × 60 =110 × 70 =149 × 50 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:655 × 12 =460 × 15 =262 × 10 = 108 × 20 =90 × 20 =300 × 20 = 530 × 10 =630 × 10 =161 × 29 = 520 × 12 =755 × 10 =125 × 70 = 310 × 25 =600 × 10 =149 × 33 = 262 × 34 =230 × 40 =100 × 80 = 100 × 35 =212 × 10 =958 × 10 = 633 × 12 =181 × 20 =160 × 10 = 258 × 20 =280 × 30 =246 × 30 = 490 × 10 =184 × 26 =190 × 38 = 132 × 20 =270 × 23 =310 × 28 = 388 × 10 =103 × 90 =200 × 10 = 100 × 60 =134 × 60 =565 × 10 = 162 × 40 =235 × 40 =577 × 11 = 140 × 31 =214 × 20 =198 × 13 = 121 × 63 =160 × 60 =990 × 10 = 100 × 84 =250 × 40 =130 × 21 = 230 × 30 =660 × 14 =120 × 83 = 165 × 32 =820 × 10 =368 × 24 =135 × 30 =750 × 13 =470 × 12 =165 × 32 =158 × 60 =755 × 10 =280 × 30 =901 × 10 =800 × 10 =680 × 10 =150 × 40 =140 × 60 =300 × 20 =930 × 10 =630 × 15 =530 × 11 =500 × 15 =700 × 10 =300 × 30 =304 × 25 =965 × 10 =100 × 70 =108 × 25 =132 × 10 =240 × 11 =300 × 10 =100 × 35 =246 × 36 =160 × 23 =134 × 10 =500 × 20 =260 × 30 =236 × 20 =250 × 40 =130 × 23 =410 × 17 =180 × 10 =280 × 12 =100 × 84 =600 × 10 =900 × 10 =370 × 16 =120 × 53 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:257 × 27 =178 × 25 =390 × 13 = 295 × 22 =270 × 35 =370 × 20 = 550 × 16 =100 × 50 =740 × 10 = 110 × 70 =145 × 10 =355 × 19 = 180 × 30 =257 × 10 =700 × 11 = 328 × 22 =230 × 24 =114 × 73 = 200 × 40 =950 × 10 =224 × 28 = 125 × 70 =400 × 20 =130 × 21 = 140 × 31 =149 × 33 =331 × 10 = 210 × 44 =90 × 60 =170 × 20 = 123 × 50 =370 × 14 =120 × 74 = 380 × 26 =180 × 20 =898 × 10 = 200 × 10 =184 × 26 =103 × 90 = 217 × 10 =688 × 11 =290 × 14 = 892 × 10 =165 × 20 =262 × 10 = 120 × 22 =90 × 80 =660 × 14 = 195 × 36 =400 × 14 =129 × 50 = 180 × 11 =270 × 23 =199 × 26 = 305 × 26 =103 × 90 =110 × 52 =410 × 17 =624 × 10 =540 × 10 =290 × 14 =100 × 90 =374 × 21 =180 × 40 =195 × 15 =20 × 30 =930 × 10 =160 × 14 =335 × 20 =217 × 10 =326 × 20 =280 × 12 =100 × 70 =400 × 20 =755 × 10 =310 × 28 =262 × 10 =331 × 10 =410 × 20 =224 × 28 =112 × 65 =110 × 68 =160 × 60 =243 × 16 =917 × 10 =898 × 10 =246 × 36 =350 × 10 =475 × 17 =195 × 36 =647 × 10 =162 × 40 =470 × 12 =688 × 11 =235 × 40 =130 × 53 =104 × 82 =240 × 16 =132 × 20 =408 × 10 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:160 × 23 =120 × 55 =700 × 10 = 198 × 34 =740 × 12 =160 × 30 = 900 × 10 =140 × 31 =104 × 40 = 390 × 10 =199 × 26 =355 × 19 = 230 × 34 =100 × 20 =410 × 12 = 90 × 40 =500 × 20 =270 × 31 = 190 × 10 =338 × 25 =600 × 10 = 390 × 13 =100 × 80 =197 × 40 = 928 × 10 =631 × 10 =310 × 22 = 469 × 16 =129 × 50 =252 × 30 = 130 × 70 =184 × 26 =130 × 21 = 630 × 15 =240 × 30 =115 × 50 = 550 × 10 =466 × 10 =380 × 10 = 630 × 10 =336 × 10 =198 × 13 = 260 × 20 =431 × 10 =343 × 23 = 180 × 10 =633 × 12 =182 × 45 = 300 × 20 =300 × 10 =652 × 15 = 149 × 33 =214 × 30 =492 × 18 = 472 × 20 =468 × 20 =200 × 40 =103 × 90 =660 × 14 =140 × 51 =125 × 70 =240 × 26 =493 × 12 =140 × 65 =624 × 15 =180 × 10 =100 × 84 =180 × 11 =184 × 26 =130 × 21 =431 × 10 =210 × 44 =50 × 10 =953 × 10 =20 × 10 =320 × 26 =199 × 26 =120 × 53 =630 × 10 =470 × 12 =755 × 10 =239 × 32 =270 × 23 =631 × 10 =782 × 10 =175 × 46 =688 × 11 =160 × 23 =120 × 44 =363 × 21 =500 × 20 =200 × 20 =134 × 40 =120 × 80 =280 × 12 =200 × 27 =110 × 70 =232 × 10 =180 × 20 =130 × 20 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:800 × 10 =140 × 60 =200 × 10 = 218 × 10 =120 × 83 =359 × 25 = 892 × 10 =335 × 12 =243 × 16 = 10 × 80 =330 × 24 =140 × 27 = 246 × 30 =331 × 10 =336 × 10 = 633 × 12 =490 × 16 =245 × 14 = 162 × 40 =540 × 10 =270 × 29 = 100 × 90 =100 × 20 =217 × 10 = 460 × 20 =418 × 17 =310 × 10 = 330 × 10 =150 × 40 =114 × 75 = 280 × 20 =280 × 30 =123 × 50 = 200 × 50 =165 × 32 =160 × 20 = 198 × 13 =235 × 40 =380 × 20 = 156 × 20 =200 × 30 =410 × 20 = 110 × 40 =150 × 10 =190 × 50 = 174 × 56 =900 × 10 =132 × 20 = 472 × 20 =820 × 10 =990 × 10 = 750 × 12 =460 × 10 =235 × 30 = 129 × 50 =120 × 83 =198 × 13 =837 × 11 =200 × 10 =409 × 20 =120 × 53 =892 × 10 =410 × 17 =100 × 60 =116 × 30 =552 × 10 =310 × 28 =180 × 16 =180 × 20 =125 × 70 =550 × 16 =565 × 10 =990 × 10 =120 × 20 =160 × 60 =408 × 10 =199 × 26 =200 × 20 =720 × 12 =243 × 16 =160 × 20 =336 × 10 =325 × 30 =165 × 20 =390 × 13 =184 × 26 =105 × 80 =316 × 25 =260 × 16 =246 × 36 =100 × 22 =280 × 34 =145 × 66 =224 × 28 =110 × 18 =620 × 13 =100 × 20 =130 × 21 =280 × 30 =122 × 45 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:110 × 70 =470 × 12 =129 × 50 = 320 × 14 =390 × 10 =140 × 50 = 216 × 34 =130 × 60 =160 × 30 = 195 × 32 =140 × 20 =270 × 23 = 898 × 10 =198 × 49 =70 × 40 = 140 × 10 =900 × 10 =170 × 55 = 130 × 69 =100 × 35 =700 × 10 = 630 × 10 =885 × 10 =50 × 80 = 400 × 20 =196 × 26 =334 × 23 = 210 × 10 =335 × 12 =510 × 19 = 332 × 25 =560 × 12 =755 × 10 = 331 × 10 =130 × 41 =410 × 20 = 260 × 15 =820 × 10 =390 × 16 = 314 × 10 =100 × 84 =500 × 17 = 633 × 12 =206 × 40 =217 × 10 = 160 × 46 =600 × 10 =598 × 13 = 120 × 64 =150 × 20 =160 × 23 = 688 × 11 =660 × 14 =720 × 10 = 149 × 33 =149 × 33 =445 × 18 =330 × 24 =675 × 10 =160 × 23 =196 × 45 =660 × 14 =345 × 16 =100 × 35 =953 × 10 =150 × 50 =40 × 40 =470 × 12 =331 × 10 =100 × 30 =140 × 31 =480 × 10 =175 × 46 =400 × 20 =612 × 15 =380 × 10 =350 × 13 =313 × 30 =180 × 11 =100 × 60 =500 × 17 =299 × 30 =160 × 15 =122 × 80 =990 × 10 =198 × 34 =204 × 33 =150 × 37 =246 × 36 =150 × 38 =304 × 25 =167 × 30 =150 × 40 =330 × 25 =266 × 15 =634 × 10 =631 × 10 =472 × 20 =239 × 37 =196 × 32 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:280 × 12 =431 × 10 =198 × 13 = 335 × 12 =230 × 38 =103 × 90 = 100 × 40 =130 × 21 =115 × 78 = 195 × 36 =100 × 52 =60 × 20 = 165 × 20 =426 × 10 =217 × 10 = 839 × 10 =600 × 10 =230 × 43 = 250 × 40 =200 × 10 =120 × 34 = 200 × 20 =100 × 84 =262 × 10 = 116 × 20 =159 × 30 =290 × 20 = 123 × 50 =117 × 49 =130 × 10 = 70 × 20 =220 × 33 =630 × 15 = 536 × 10 =310 × 28 =185 × 10 = 120 × 83 =633 × 12 =280 × 30 = 770 × 10 =90 × 10 =136 × 65 = 143 × 40 =300 × 30 =410 × 17 = 145 × 55 =506 × 10 =210 × 26 = 80 × 50 =270 × 23 =110 × 39 = 380 × 18 =195 × 28 =235 × 40 = 430 × 15 =330 × 24 =863 × 10 =165 × 20 =552 × 10 =210 × 30 =160 × 60 =80 × 20 =160 × 58 =228 × 15 =475 × 17 =130 × 72 =100 × 50 =195 × 36 =170 × 30 =990 × 10 =336 × 10 =199 × 26 =930 × 10 =115 × 30 =410 × 17 =500 × 10 =633 × 12 =198 × 13 =214 × 30 =217 × 10 =180 × 11 =631 × 10 =400 × 20 =170 × 44 =162 × 40 =210 × 44 =175 × 46 =580 × 14 =129 × 50 =200 × 16 =630 × 10 =250 × 35 =318 × 30 =224 × 28 =235 × 40 =153 × 30 =820 × 10 =100 × 90 =100 × 40 =130 × 21 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:198 × 34 =160 × 23 =180 × 10 = 700 × 10 =246 × 36 =110 × 65 = 220 × 43 =630 × 15 =152 × 30 = 500 × 20 =335 × 12 =120 × 83 = 270 × 15 =487 × 20 =390 × 13 = 100 × 20 =898 × 10 =100 × 84 = 344 × 10 =182 × 45 =244 × 10 = 120 × 44 =225 × 14 =717 × 10 = 250 × 20 =800 × 10 =550 × 16 = 123 × 50 =410 × 20 =140 × 60 = 270 × 23 =250 × 40 =270 × 20 = 280 × 20 =472 × 20 =158 × 17 = 145 × 46 =550 × 10 =170 × 10 = 892 × 10 =264 × 35 =932 × 10 = 688 × 11 =796 × 10 =400 × 14 = 200 × 10 =307 × 24 =280 × 12 = 320 × 20 =154 × 49 =138 × 12 = 150 × 43 =200 × 30 =431 × 10 = 132 × 20 =550 × 10 =190 × 50 =688 × 11 =50 × 40 =410 × 11 =800 × 10 =110 × 28 =500 × 10 =110 × 10 =345 × 22 =239 × 11 =180 × 36 =125 × 70 =400 × 10 =930 × 10 =410 × 20 =246 × 30 =224 × 28 =383 × 25 =900 × 10 =470 × 12 =40 × 60 =199 × 26 =200 × 20 =120 × 44 =408 × 10 =170 × 26 =158 × 60 =135 × 56 =240 × 30 =100 × 40 =168 × 45 =180 × 10 =400 × 14 =162 × 40 =560 × 15 =898 × 10 =953 × 10 =500 × 20 =540 × 10 =312 × 25 =239 × 37 =114 × 10 =100 × 10 =175 × 46 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:136 × 70 =335 × 12 =165 × 32 = 244 × 40 =130 × 40 =100 × 20 = 582 × 15 =700 × 10 =149 × 33 = 246 × 36 =120 × 83 =471 × 16 = 30 × 30 =243 × 16 =240 × 26 = 130 × 21 =100 × 84 =600 × 10 = 100 × 35 =336 × 10 =520 × 10 = 625 × 11 =200 × 50 =670 × 10 = 331 × 10 =482 × 15 =169 × 11 = 250 × 40 =123 × 50 =298 × 10 = 552 × 10 =235 × 10 =200 × 30 = 431 × 10 =110 × 70 =272 × 30 = 380 × 10 =410 × 18 =300 × 10 = 280 × 12 =685 × 14 =550 × 16 = 263 × 33 =146 × 20 =210 × 44 = 130 × 75 =565 × 10 =125 × 50 = 100 × 70 =510 × 10 =160 × 23 = 184 × 26 =633 × 12 =321 × 30 = 165 × 20 =400 × 20 =690 × 10 =280 × 12 =470 × 10 =200 × 20 =130 × 42 =550 × 10 =230 × 42 =149 × 33 =472 × 20 =660 × 14 =540 × 10 =195 × 36 =970 × 10 =60 × 70 =159 × 54 =181 × 22 =103 × 90 =102 × 96 =243 × 16 =410 × 17 =270 × 23 =242 × 40 =552 × 10 =150 × 56 =198 × 34 =180 × 10 =500 × 20 =160 × 41 =214 × 30 =30 × 80 =747 × 13 =100 × 35 =290 × 14 =251 × 39 =630 × 15 =255 × 12 =210 × 30 =114 × 73 =410 × 20 =246 × 36 =160 × 30 =110 × 81 =633 × 12 =105 × 28 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:170 × 50 =645 × 13 =514 × 16 = 304 × 25 =90 × 80 =990 × 10 = 120 × 44 =198 × 13 =380 × 10 = 600 × 10 =390 × 10 =262 × 10 = 540 × 18 =631 × 10 =550 × 16 = 335 × 12 =123 × 50 =490 × 15 = 250 × 26 =898 × 10 =144 × 30 = 165 × 32 =314 × 20 =103 × 43 = 197 × 30 =241 × 40 =80 × 20 = 100 × 45 =162 × 40 =217 × 10 = 415 × 18 =239 × 37 =120 × 70 = 140 × 60 =688 × 11 =210 × 13 = 900 × 10 =235 × 40 =200 × 40 = 630 × 10 =100 × 20 =246 × 30 = 302 × 13 =130 × 21 =555 × 12 = 800 × 10 =210 × 22 =359 × 25 = 232 × 40 =660 × 10 =120 × 35 = 820 × 10 =132 × 20 =431 × 10 = 418 × 20 =210 × 44 =200 × 20 =306 × 20 =290 × 14 =892 × 10 =262 × 10 =500 × 20 =155 × 48 =630 × 10 =152 × 45 =550 × 10 =160 × 60 =338 × 25 =755 × 10 =350 × 10 =431 × 10 =90 × 60 =630 × 15 =275 × 34 =355 × 19 =330 × 25 =200 × 32 =186 × 30 =114 × 73 =626 × 12 =824 × 10 =164 × 60 =400 × 20 =122 × 75 =140 × 30 =359 × 25 =100 × 20 =460 × 16 =200 × 40 =100 × 84 =280 × 22 =175 × 46 =103 × 90 =250 × 40 =565 × 10 =246 × 30 =159 × 57 =235 × 40 =400 × 10 =234 × 15 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:414 × 16 =148 × 34 =700 × 10 = 199 × 26 =109 × 50 =100 × 60 = 528 × 17 =150 × 42 =227 × 30 = 333 × 30 =120 × 44 =198 × 13 = 180 × 11 =280 × 12 =552 × 10 = 408 × 10 =132 × 20 =198 × 34 = 107 × 20 =732 × 10 =290 × 31 = 212 × 35 =157 × 40 =450 × 20 = 220 × 18 =820 × 10 =540 × 10 = 170 × 28 =880 × 10 =80 × 20 = 898 × 10 =660 × 10 =239 × 37 = 110 × 70 =390 × 13 =186 × 26 = 336 × 10 =548 × 10 =243 × 16 = 430 × 22 =500 × 10 =410 × 17 = 40 × 40 =330 × 24 =218 × 10 = 900 × 10 =100 × 35 =200 × 35 = 104 × 95 =310 × 28 =140 × 31 = 322 × 30 =20 × 90 =550 × 16 = 150 × 40 =120 × 44 =219 × 30 =125 × 70 =565 × 10 =162 × 40 =239 × 37 =540 × 10 =184 × 26 =390 × 10 =108 × 92 =178 × 35 =125 × 78 =520 × 10 =140 × 31 =200 × 20 =165 × 20 =305 × 30 =262 × 10 =100 × 10 =230 × 38 =328 × 19 =108 × 10 =552 × 10 =880 × 10 =110 × 70 =180 × 20 =200 × 12 =144 × 45 =146 × 60 =220 × 21 =320 × 11 =165 × 32 =195 × 36 =180 × 10 =130 × 42 =270 × 23 =114 × 73 =200 × 40 =290 × 16 =455 × 10 =160 × 30 =100 × 80 =633 × 12 =171 × 30 =217 × 10 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:760 × 10 =100 × 84 =355 × 19 = 164 × 19 =214 × 30 =103 × 90 = 310 × 28 =224 × 30 =892 × 10 = 280 × 30 =246 × 30 =730 × 10 = 200 × 30 =430 × 11 =198 × 13 = 108 × 30 =500 × 14 =898 × 10 = 200 × 50 =120 × 83 =336 × 10 = 470 × 12 =190 × 48 =300 × 29 = 953 × 10 =149 × 33 =443 × 13 = 190 × 30 =110 × 42 =199 × 26 = 500 × 20 =300 × 10 =600 × 10 = 148 × 44 =243 × 16 =320 × 23 = 660 × 14 =642 × 13 =380 × 10 = 102 × 70 =140 × 30 =123 × 50 = 330 × 24 =304 × 25 =160 × 23 = 265 × 14 =10 × 40 =431 × 10 = 250 × 40 =250 × 11 =150 × 40 = 180 × 11 =231 × 19 =135 × 68 = 400 × 20 =120 × 60 =410 × 20 =550 × 16 =830 × 10 =224 × 28 =390 × 13 =250 × 40 =160 × 30 =174 × 25 =262 × 10 =210 × 44 =688 × 11 =40 × 70 =198 × 34 =587 × 12 =670 × 11 =255 × 30 =562 × 10 =160 × 41 =245 × 36 =500 × 14 =800 × 10 =280 × 12 =135 × 26 =103 × 90 =330 × 24 =150 × 50 =631 × 10 =40 × 20 =400 × 14 =990 × 10 =349 × 26 =100 × 90 =180 × 20 =465 × 12 =168 × 10 =125 × 70 =110 × 70 =175 × 46 =165 × 32 =158 × 60 =152 × 40 =633 × 12 =280 × 30 =335 × 12 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:210 × 20 =552 × 10 =390 × 10 = 100 × 70 =140 × 60 =150 × 40 = 142 × 70 =223 × 10 =110 × 20 = 100 × 35 =244 × 30 =272 × 20 = 200 × 30 =930 × 10 =892 × 10 = 755 × 10 =875 × 10 =270 × 13 = 200 × 50 =130 × 21 =123 × 50 = 140 × 61 =100 × 30 =408 × 10 = 184 × 26 =106 × 10 =630 × 10 = 360 × 20 =40 × 40 =220 × 44 = 186 × 13 =380 × 10 =474 × 15 = 214 × 30 =587 × 15 =199 × 26 = 218 × 10 =470 × 12 =472 × 20 = 170 × 34 =160 × 11 =711 × 10 = 120 × 64 =336 × 10 =180 × 10 = 565 × 10 =235 × 40 =540 × 10 = 550 × 10 =310 × 28 =110 × 14 = 10 × 60 =165 × 20 =374 × 20 = 130 × 16 =120 × 44 =160 × 60 =160 × 23 =160 × 10 =300 × 30 =250 × 40 =640 × 10 =930 × 10 =120 × 83 =165 × 10 =123 × 50 =990 × 10 =305 × 27 =331 × 30 =139 × 50 =300 × 10 =330 × 24 =180 × 10 =125 × 76 =495 × 16 =103 × 90 =200 × 30 =300 × 20 =200 × 40 =199 × 26 =239 × 37 =400 × 10 =355 × 19 =290 × 14 =825 × 10 =898 × 10 =246 × 30 =477 × 16 =300 × 22 =120 × 53 =113 × 45 =336 × 10 =755 × 10 =50 × 60 =118 × 60 =344 × 12 =40 × 50 =400 × 20 =200 × 50 =328 × 10 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:390 × 10 =848 × 10 =175 × 46 = 472 × 20 =60 × 70 =140 × 31 = 431 × 10 =384 × 10 =217 × 10 = 408 × 10 =214 × 30 =265 × 18 = 410 × 20 =90 × 10 =688 × 11 = 110 × 11 =114 × 73 =133 × 27 = 380 × 10 =160 × 30 =200 × 20 = 235 × 40 =198 × 34 =290 × 21 = 210 × 44 =165 × 32 =100 × 68 = 470 × 12 =101 × 46 =660 × 14 = 120 × 66 =180 × 11 =630 × 12 = 444 × 20 =450 × 10 =110 × 60 = 800 × 10 =565 × 10 =545 × 15 = 50 × 10 =552 × 10 =184 × 26 = 100 × 80 =100 × 84 =650 × 15 = 150 × 10 =190 × 10 =165 × 20 = 125 × 70 =400 × 14 =162 × 40 = 953 × 10 =147 × 46 =188 × 50 = 600 × 10 =164 × 20 =40 × 40 =200 × 10 =249 × 20 =214 × 30 =100 × 84 =350 × 24 =160 × 30 =120 × 64 =100 × 35 =227 × 22 =470 × 17 =390 × 10 =120 × 83 =184 × 26 =280 × 13 =100 × 80 =100 × 20 =450 × 17 =20 × 50 =180 × 40 =160 × 36 =100 × 50 =164 × 55 =335 × 12 =160 × 33 =165 × 20 =224 × 28 =455 × 10 =148 × 50 =180 × 11 =260 × 10 =181 × 47 =310 × 28 =120 × 53 =900 × 10 =280 × 12 =158 × 60 =115 × 14 =199 × 26 =130 × 21 =600 × 10 =158 × 55 =460 × 16 =129 × 50 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:102 × 80 =270 × 23 =410 × 20 = 390 × 13 =500 × 20 =210 × 27 = 380 × 12 =228 × 20 =175 × 46 = 140 × 60 =359 × 25 =410 × 17 = 700 × 10 =370 × 23 =130 × 37 = 239 × 10 =475 × 17 =149 × 33 = 177 × 10 =215 × 12 =360 × 26 = 240 × 24 =198 × 13 =100 × 60 = 100 × 97 =336 × 10 =990 × 10 = 239 × 37 =246 × 20 =100 × 10 = 630 × 15 =330 × 24 =123 × 50 = 246 × 36 =110 × 86 =432 × 15 = 312 × 23 =395 × 20 =165 × 32 = 578 × 10 =633 × 12 =125 × 70 = 140 × 40 =120 × 40 =20 × 60 = 150 × 40 =246 × 30 =304 × 25 = 300 × 10 =180 × 30 =162 × 40 = 172 × 30 =484 × 15 =630 × 10 = 196 × 50 =648 × 10 =362 × 15 =880 × 10 =132 × 20 =160 × 30 =304 × 25 =630 × 15 =431 × 10 =130 × 54 =100 × 80 =110 × 78 =190 × 15 =184 × 26 =410 × 20 =129 × 50 =162 × 40 =183 × 50 =647 × 10 =280 × 30 =755 × 10 =800 × 10 =935 × 10 =550 × 10 =114 × 73 =565 × 10 =105 × 48 =310 × 30 =140 × 31 =110 × 10 =330 × 24 =500 × 20 =246 × 30 =410 × 17 =175 × 35 =120 × 62 =100 × 20 =440 × 12 =390 × 13 =640 × 11 =210 × 36 =248 × 25 =218 × 10 =472 × 20 =230 × 10 =224 × 28 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:248 × 20 =120 × 60 =198 × 13 = 450 × 20 =540 × 10 =688 × 11 = 598 × 10 =336 × 10 =250 × 40 = 168 × 41 =155 × 10 =820 × 10 = 80 × 10 =10 × 30 =660 × 14 = 105 × 82 =303 × 29 =630 × 10 = 160 × 23 =134 × 50 =110 × 70 = 195 × 36 =408 × 10 =214 × 30 = 990 × 10 =900 × 10 =100 × 30 = 240 × 30 =330 × 10 =953 × 10 = 100 × 25 =355 × 19 =130 × 20 = 350 × 15 =200 × 10 =125 × 70 = 246 × 36 =400 × 14 =120 × 44 = 631 × 10 =300 × 20 =130 × 69 = 540 × 14 =380 × 17 =100 × 32 = 152 × 60 =260 × 20 =143 × 68 = 180 × 10 =370 × 18 =100 × 84 = 175 × 46 =840 × 10 =174 × 36 = 217 × 10 =400 × 10 =140 × 31 =146 × 65 =180 × 11 =330 × 24 =140 × 60 =770 × 12 =160 × 60 =300 × 28 =100 × 70 =134 × 50 =400 × 13 =200 × 10 =400 × 14 =498 × 15 =160 × 30 =100 × 20 =842 × 10 =304 × 25 =130 × 32 =228 × 40 =820 × 10 =431 × 10 =220 × 30 =454 × 20 =224 × 28 =199 × 26 =40 × 40 =688 × 11 =235 × 40 =310 × 30 =654 × 15 =258 × 20 =120 × 83 =110 × 30 =930 × 10 =110 × 34 =359 × 25 =130 × 21 =892 × 10 =120 × 44 =470 × 12 =150 × 18 =286 × 30 =267 × 13 =练习范围：三位数乘两位数 题数：100月日姓名: 分秒成绩:695 × 10 =300 × 10 =305 × 13 = 550 × 16 =398 × 15 =246 × 36 = 550 × 10 =80 × 20 =331 × 10 = 565 × 10 =100 × 84 =540 × 10 = 408 × 10 =114 × 57 =118 × 50 = 165 × 32 =900 × 10 =357 × 20 = 630 × 10 =372 × 10 =250 × 40 = 214 × 30 =310 × 28 =127 × 70 = 100 × 80 =198 × 13 =184 × 26 = 280 × 30 =390 × 13 =443 × 20 = 380 × 10 =123 × 50 =262 × 10 = 633 × 12 =494 × 10 =173 × 40 = 701 × 12 =180 × 45 =120 × 63 = 800 × 10 =100 × 90 =190 × 32 = 771 × 10 =320 × 30 =210 × 27 = 216 × 10 =320 × 20 =103 × 90 = 200 × 40 =114 × 73 =198 × 34 = 552 × 10 =180 × 20 =132 × 20 = 770 × 10 =。
四年级两位数乘一位数的口算乘法
两位数乘一位数的口算乘法教学内容：义务教育课程标准实验教科书四年级上册口算乘法第46～48页教学目标1．通过教学使学生理解两位数乘一位数或几百几十数乘一位数的口算乘法算理．2．培养和提高学生的理解能力和计算能力．3．培养学生仔细计算的良好学习习惯．教学重点理解两位数乘一位数或几百几十数乘一位数的口算乘法算理．掌握口算方法．教学难点正确口算，并具备一定的速度．教学过程一、口算练习：1、口算下面各题：10×4=3×60=8×20=80×4=10×40= 30×60= 8×200=800×4=10×5+6 2 0× 3 +2 730×4 + 18 60×5 +19 二、新课导入：师：不错！大家观察的很仔细，这些口算题是大家在三年级下册学的知识，今天咱们继续来学习口算乘法！板书课题，请看本节课的学习目标（出示课件）二、探索新知：1、创设情境：同学们秋天是一个快乐游玩的好季节，出去郊游我们可以选择什么样的交通工具？学生自由发言。
认识生活中的交通工具，自己观察一下速度？（出示课件）请学生自己试读上面的速度，并指名读，教师指导读法。
并说说什么意思，你还知道其他交通工具的速度吗？2、提出问题：你能提出什么数学问题？学生自由提出问题，并解决问题。
师： 16×3等于几呢？把你的想法说给旁边的同学听．学生汇报得出：板书：生：（1）生：（2）12×3=366×3=18 4×3=1230+18=48 36+12=48生：（3）16×2=32 生：（4）15×3=45 生：……1×16=16 3+45=4832+16=48 生：（5）竖式计算3）汇报方法，比较最优化的算法：你喜欢哪一种方法？为什么？（肯定笔算的这种方法，但要突出本节课重点都要学会用口算的方法）4）小结口算方法师：这些同学在计算时他们都是怎么做的。
小学四年级《三位数乘两位数》练习题1套
小学四年级《三位数乘两位数》练习题一.选择题(共10题，共20分)1.在一个乘法算式中，要使积不变，一个乘数扩大10倍，另一个乘数（）。
A.扩大10倍B.缩小10倍C.扩大100倍2.计算134×23时，1与2相乘实际上是（）。
A.1×2B.10×20C.100×203.两个数相乘，一个因数（0除外）不变，另一个因数（0除外）扩大到原来的4倍，积（）。
A.缩小到原来B.不变C.扩大到原来的4倍4.下面的算式中（）与45×20的积不相等。
A.450×2B.20×45C.45×2005.下面算式中，与18×20的计算结果不同的是（）。
A.180×2B.9×40C.108×26.已知AxB=720，如果A不变，B乘2，则积是（）；如果A除以5，B不变，则积是（）。
A.720B.144C.14407.在计算756×48时，4×5表示（）。
A.4×5B.40×5C.40×508.最大的两位数和最小的三位数的乘积是（）。
A.900B.9000C.99009.下面估算方法与298×12的积最接近？（）A.290×10=2900B.300×10=3000C.300×15=450010.甲数是328，乙数是甲数的15倍，要求乙数是多少，可列式为（）。
A.328+15B.328×15C.328÷15二.判断题(共10题，共20分)1.乘法算式中，一个因数扩大为原来的10倍，另一个因数也扩大为原来的10倍，积就扩大为原来的100倍。
（）2.如果两个乘数的末尾均有2个0，那么它们的积的末尾至少应有4个0。
（）3.500×80的积的末尾有3个0。
（）4.一个长方形的长和宽同时扩大到原来的10倍，这个长方形的面积就扩大到原来的10倍。